Electrically-controlled valve.



vII. G.. GEISSINGER.

ELECTRICALLY CONTROLLED VALVE. APPLICATION FILED IuLY 12,1912.

. Patented June v`1915.

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APPLICATION FILED JULY l2, 1912.

Patented June 15, 1915.

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(avi/tumores H. G. GEISSINGER. ELECTRICALLY CONTROLLED VALVE.APPLICATION FILED IuLY I2. 1912.

Patented June 15, 1915.

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HARRY Gr. GEISSINGER,'OF NEW YORK,.1\T. Y., V.ASSIGr1\TO]R. TOGEISSINGER REGULATOR COMFANY, OF'NEW YORK, 1\`|7. Y., A CORPORATION OFNEW YORK.

intenso.

To all 'whom it mag/lconce'wi; l

Be it known that I, HARRY G. GEISSINGER. a. citizen of the UnitedStates, residing at New York, in the'county of New York and. State ofNew York, have invented certain new and useful Improvements inElectrically-Controlled Valves, of which the folltrol operating upon apiston in opposition4 to the thrust uponthe valve disk.

One of-the objects of my invention is to provide valve-operatingmechanism which Will open the valve without shock and which will assumea position of equilibrium aslong as the valve remains open. It Ihas beenproposed to balance single-seating valves and to operate them by controlof a fluid-pressure derived from the main conduit but'it has been moreor less Idiiiciilt to reconcile the balancing and operating vfunctionsWithout introducing undue complications.

It is my purpose .to provide a valve With.- out packing in connectionWith the moving parts, the valve -stem and piston fitting loosely Withintheir housings. I further provide means to prevent the hammering of theiston upon the completion of its stroke or the chattering of the valveupon. closing-thereby reducing the Wear and prolonging the'life of thevalve mechanism. The structural arrangement is such that all of theprincipal movable parts are readily accessible for adjustment., Thevalve may be easily ground to its seat and can be removed if necessaryWithoutdiihculty.

Other objects of my invention will be apparent from the followingdescriptionwhile its scope is defined in the appended claims. In the.accompanying drawings, Figure 1, is a longitudinal section through. .avalve and the operating piston showing one embodiment of my invention;Fig. 2, is a vertical sectional view ofthe same taken -substantially atright angles to Fig. 1, but passing through tivo planes to show thestructure of the electro-magnetic actuating mechanism .and of the pilotvalve; Fig. 3, vis an end elevation of tlie valve casing; Fig.v 4, is adetail view of the armature and lever mecha- Specification of LettersPatent. v `la'pgsiiiaitiuiii ined any 12, 1912. seriaino. 709,056.

ELECTRIUAL-LY-CONTROLLED VALVE.

Patented 1" une 15, '1915.

nism; Fig. 5, is a cross-section on the line V-V of Fig. 1; Fig. G, is alongitudinal elevation of a modification of my valve-operating mechanismadapted to large size valves; Fig. 7, is a transversel elevation, partlyin section of the arrangement shown in Fig. 6; Fig. 8 lis a top planview of the piston and parts connected therewith; Fig. 9, is a detailview of the armature and yokearm connected thereto; and Figs. 10 and 11,are longitudinal and transverse sectional views of a modificationshowing my invention applied to a normally open valve.

The valveishownin Figs'l and 2, is the normally closed type. The casing1, is divided by a diaphragm 3 having a valveseat 4, noriifiallyv closedby the valve-disk 5.

An upper guide-plunger 7, adjustably secured to the threaded guide-'stem8, slides in the cavity of the screw-cap 9. A flexible disk 10, isadapted to cushion the shock against the cap. By removing the capthevalve may be manipulated to grind it to its seat or it may be liftedfrom the casing.

The valve-stem 12, projects loosely into a central guiding hole orcavity in the piston 14:, the latter fitting loosely in the pistoncylinder 15, closed by the plug 15a. The bottom of the cylinder 15 isconnected by means of a `channel 16 with the port 18,

'which is controlled by the pilot valve 19.

When the pilot valve is lifted the channel 1G is connected through port18 with the chamber 2O which communicates with the inlet or pressuresideof the valve casing through an opening 21.

The stem of the pilot valve extends Within the cavity of a tubularportion 23 of the casing, closed by the cap 24 and is normally held toits seat by the spring 25. For the purpose of lifting the pilot valve, Iprovide a lever 27, pivoted at 28,.and having a camfaced arm 2'(abearing against a nut 29, threaded upon the pilot valve stem. Adiskshaped armature 30, having a pintle 31, mounted in bearings 32, isprovided With a lug 33, Which engages the end of the lever 27. Theelectro-magnet actuatinvl the armature 30, consists preferably of acylindrical magnetic casing 35 and a central core 36, carrying a coil37, the magnet casing being threaded to an annular boss on the valvecasing and separated from the chambe lifted, carrying the.valve-diskupward and thereby opening communication between the inletand ing 1.

In Figs. 6 and 7, I have shown a modification which is adapted tooperate large valves. Tliepiston chamber 15 is connected with thechamber 20 in the manner previously described by a channel 16, which isnormally closed by a pilot valve 19, shown in this casev as providedwith a Weighted steam 19h. kThe actuating armature 30 carries a yoke arm27", pivoted at 28 and bearing upon the nut 29. The live steam isconveyed from the inlet to the chamber 20 by means of a tube 21.

The cup-shaped 'piston 14, is provided with a central projection or boss13 having a guiding cavity into which the lower end of the valve-stem 12loosely projects so that a slight lateral play is permitted. The bottomof the piston is provided with" a port normally closed by a relief orbalancing valve 40 having a stem 42, passing through a guide 43, Thevalve is lifted by an annular weighted lever 46, pivoted at 47, 47; andbearingagainsta lug'or nut 48 on the valve stem. I

When the armatureA 30a is attractedl by the magnet, the pilot valve 19is lifted and live steam flows from the inlet side of the casing,

through the tube 21, and the channel 16 to the bottom of the pistoncavity. The piston 14 is thereby forced upward, lifting the valve-diskl5, from its seat. It will be observed that the stem 42 of thecushioning valve extends above the piston and' when this strikes thebottom of the ange 50, the valve 40 is opened, thereby equalizing the'pre'ssures upon both sides of .the piston and arresting the upwardstroke.. The valve-disk and operating pistonv are thus lifted withoutshock. As soon as the valve begins to descend, the weighted lever46begins to lift the' valve 4G toward lits seat, but ldoesnotcompletelyclose the valve-'port because the 4pressure below'the pistonimmediately increases. The ports,therefore, arrive atfa position ofequilibrium where the leakage through the partiallyelosed ofvalve 40,together with the normal leakage-around the walls olf-the. piston,proportion the 'pressure belowthe piston te equalv the downward. .thrust.of theSvalve-disk. ports Outlet sdesof. the.. cas.-

will remain in a position of equilibrium with thevalve lifted as long as.theV magnet is energized.

Upon denergzing the magnet, the pilot valve 19 closes the port of the.channel 16 and the pressure below the piston rapidly falls by reason ofthe leakage about the valve 40 and the normal leakage around the myinvention may be applied to a normally u open valve. The operatingpiston 14 is placed above the valve-disk 5, which it lifts `by means ofthe collar 12; secured to the stem 12. The recess in the top of thepiston is closed by a steam-tight gasket 52 and a vplate 53. The pistoncavity is closed by a removable cap 9. A channel 16 connects the upperportion of the piston cavity or cylinder with thepoutlet side of thecasing and is controlled by pilot valve '19 having a stem supported bythe end of the armaturelever 27. It is important that the pilot valveshould be ad]usted very accurately with respect to the lever 27 and alsothat,

means should. be provided for takingup wear. I therefore provide anadjusting nut 54 in the end of the lever and place an aperture in thecasing to give access thereto, whichis closed by the cap `55. K

Normally the pilot-valve 19 is in its lowermost position, leaving thechannel 16 open.' The upward pressure .of the steam upon the pistonraises the valve-disk 5 and maintains it iny open position. The lift or'travel of the valve 1s arrested when the piston covers the port oropening of the channel 16, and the piston and valve are held inequilibrium. It is obvious that the arrangement of balancing or reliefvalve .shown in Fig. 7 could be employed with this type. of normallyopen valve, if desired. When the magnet 37 is energized and the armature30 is attracted the pilot-valve 19 closes the channel 16, and thepressure abovevthe piston accumulates, by reason of the leakage aroundthe piston, until said .pressure together with that upon the valvediskis suiHcient to seat the disk.

` It will beI observed that I have avoided the l use of any packing orstuiiing boxes for the movable parts, thereby reducing the frie-l tionand wear to a minimum. The operative parts are exceedingly simple inconstruction and are not liable to get out of order. |'llhe bell-cranklever and the actuating armature connected therewith are located in acha-mber which is in direct communication with the passage or channelleading from the casing to thepiston cylinder and, in fact, this chamber20 forms a part of said passage which conducts the fluid pressure fromthe casing 1 to the rear of the piston when the pilot-valve is liftedfrom its seat.

ceedingly compact valve mechanism.

By pivoting the armature at one side, as shown in Fig. 4,'and connectingthe bellcrank to the opposite side, the armature is enabled to exert avery powerful lifting force upon the pilot-valve Within the confinedspace of the narrow chamberQO. The nearly circular disk-armature forms apath for the circular air-gap between the annular pole or shell of themagnet and the' central core, which produces f. the entire surface ofthe armature. I have shown the armatures in the form of circular diskswith a segment removed adjacent the hinge. By constructing the armaturein this form, I am enabled to enhance the eciency lof the magneticsystem and to secure a very strong pull 4for the size of the magnet'employed. Any magnetic linx which 4might pass from the magnet polesthrough the armature near the hinge would exert a very small pullbecause of its small leverage and by reason of its-nearness to the polesit would divert a large amount of' flux and,

therefore, by ,removing a segment of the.

metal of the armature near the, hinge, the magnetic luX is caused totraverse the magneticcircuit more advantageously thus causing aconsiderable gain in the performanc of the magnetic structure.

I have described in detail the'particular construction illustrated inthe accompanying drawings for the purposeof disclosing embodiments of myinvention, but it will be evident to engineers that various other modesof operation and changes in the.

structure may be made without departing from the spirit of my inventionand princi-v ples herein set forth.

I cla-im2- l. Valve apparatus comprising a 'casing having inlet andoutlet chambers connected by a port, a main valve controlling said port,a cylinder having4 a piston reciprocable therein and operativelyconnected to said valve, a channel connecting said cylinder and saidcasing and having an enlarged chamber, the outer wall of said chambercomprising a non-magnetic plate, a pilotvalve controlling said channel,an operating lever connected to said pilot-valve and having an armaturelocated in said chamber and positioned adjacent said non-magnetic Thisconstruction enables me to make an exmagnetic pull over lit plate, andan electro-magnet inclosed in a magnetic shell or housing and secured tothe outside of said plate and exerting its magnetic influencetherethrough upon said armature. f A

, 2. Valve apparatus comprising a casing having inlet and outletchambers connected y by a port, a main valve controlling said port, acylinder having a piston i'eciprocable therein and. operativelyconnected to said valve, a channel connecting said cylinder and saidvcasing and having an enlarged chamber, the outer wall of said chambercomprising a non-magnetic plate, a pilotvalve-controlling said channel,a hell-crank lever having one arm adjustably-connectedv 'guiding hole,the bore of said cylinder being of a size to permit leakage around thepiston, a main valve controlling said port and having a stem extendingwithin said recess, the diameter of saidhole being of a size to permit aslight lateral movement of said stem, a passage connecting said cylinderand said casing, a pilot-valve controlling said passage, a chamberconnected with said passage, a levertpivotally mounted in said chamberand adjustably connected to said 'pilot-valve, and an electro-magneticdevice operatively connected to said lever.

4.. Valve apparatus comprising a casing having inlet and outlet chambersconnected by a port, a cylinder in open communication with said casing,a piston reciprocable in said cylinder and having a central recess, amain valve controlling said port and having a stem extending looselywithin said recess, a

passage connecting said cylinder and said casing, a pilot-valvecontrolling said passage, a chamber connected with said passage,

a lever pivotally mounted in said chamber` and adjustably connected tosaid pilotvalve, an electro-magnetic device operatively connected tosaid lever, and a relief valve carried by said piston having a stemextending above the piston.

5. Valve apparatus comprising a casing having inlet and outlet chambersconnected by a port, a cylinder in open communication with said casing,a piston reciprocable in said cylinder and having a central recess. a

main valve controlling said port and having 'l Y a stem extendingloosely within said recess,

a passage connecting said cylinder andy seid casing, a pilot-Valvecontrolling said'pas-v sage, a relief valve carried by said pistonhaving a stem extending beyond the piston, and means for normallyholding the relief valve in closed position.

6. Valve. apparatus `comprising a, 'casing having inlet and outletchambers connected. by a port, a cylinder commiucatingvw'lth" theoutletdchamber of said casing, a. piston reciprocablein said cylinder, amain valve controlling said port and having a stem cooperating with saidpiston to lift the valve,

' tending beyond the same, and adapted to means for subjecting saidpiston lto fluidl pressure from said casing, a relief valve carried bysaid piston and havlng a stem ex# having inlet and outlet chambersconnected by a port, a cylinder in open communication with lsaid casing,apistjon reciprocable in said cylinder and having'a central-guidinghole, the bore of said cylinder being of a size to permit leakage around.the p1ston,'a

vmain valvecontrolling said port and having a stem extending within-saidguiding hole,

, the diameter of saidfholebeing of a size to permit--lateralmovement ofstem, a passageconnecting said cylinder and .said casing, a pilot-valvecontrolling saidpassage, and means for actuating saidpilot-va1vecomprising an electro-magneticdevice and an armature thereforadjustablyvconnected,

to the pilot-valve.l v

In testimony in: presence of-two witnesses.

i y HARRYjG-j-enrssinenn. i -Witnessesf y A

